Overhaul and repair of motorcycle engines and gearboxes

Any equipment tends to wear out. As a result, there is always a risk of facing the need to overhaul the motorcycle engine. We carry out high-quality repairs of power units of any motorcycles. All work is carried out in a short time, specialists find out all the nuances and features of the malfunction. This approach allows us to provide a guarantee for all types of work. Contact us at any time convenient for you.

Motorcycle engine repair

You can often hear that repairing a motorcycle engine is not a difficult task. But, this is not entirely true. Almost all modern motor engines are quite complex. This allows you to achieve high performance during operation.

But the high complexity makes independent repairs almost impossible. You need to know all the nuances that affect the quality of work. There are also some difficulties with the selection of parts; motorcycles are not as common as cars. Therefore, in many cases it is necessary to look for various analogues or order parts directly from the manufacturer.

Adjusting motorcycle valves

Check thermal clearances according to the service manual for your motorcycle, as well as after disassembling the head or replacing the timing chain, or when a characteristic “clunking noise” appears from the cylinder head.

Increased clearances lead to increased noise when the engine is running, and if the clearances are too small, the valves will not close, and the engine will not develop rated power, and sometimes it will be difficult to start.

Our motorcycle service provides:

Please note that after adjusting the valves, in some cases it is necessary to synchronize the motorcycle carburetors.

Overhaul, technologies and features

As a rule, people turn to services when major repairs are already required. Therefore, we will consider the main nuances of the major reconstruction of the power unit. In fact, there are several stages here.

• Primary diagnosis. They interview the driver, and also start the engine (if possible) and check its operation.
• Removing the engine. This is mandatory work, without which further actions are impossible.
• Disassembly and troubleshooting. Here the functionality of all units and components of the power unit is checked.
• Ustan

forging of new components and assembly.

As you can see, the process is quite labor-intensive. But this is the only way to achieve optimal results.

Motorcycle services

Our motorcycle service has been servicing Japanese motorcycles since 2004: HONDA , SUZUKI , YAMAHA , KAWASAKI of the entire model range. In 2021, we became the official warranty service of the BAJAJ corporation, as well as BMW and Triumph . We accept any motorcycles for winter storage. We keep it warm, with legal guarantees and under protection!!

WE HAVE DEVELOPMENTS AND SPECIAL TOOLS FOR REPAIRING ENGINES, GEARBOXES, CLUTCH REPLACEMENT FOR HONDA GOLD WING 1800. GUARANTEES. REASONABLE PRICES.

WE DO: INSTALLATION OF MOTOR ELECTRICAL ALARMS (STARLINE), TREATING FORK LEAVES, "ROLLING" TRAINING OF CAST WHEELS, MOTOR ELECTRICAL (including complex cases), POWDER COATING, COMPUTER DIAGNOSTICS OF INJECTION MOTORCYCLES (HONDA SUZUKI Y AMAHA KAVASAKI BMW)

We have the capabilities and skills of personnel to service the entire Japanese modern model range (also motorcycles from 90-2000)

We do the most difficult work - OVERHAULING ENGINES, TRANSMISSIONS, ADJUSTING VALVES, INJECTOR ADJUSTMENT,

COMPLEX ELECTRICAL CASES. BLEEDING COMBINED BRAKE SYSTEMS WITH ABS. All work is guaranteed.

Prices are about 30% lower than the official prices!

When buying a used motorcycle, many are faced with the problem of assessing its technical condition. Our motorcycle service carries out professional diagnostics of motorcycles and gives recommendations for repair and maintenance, and calculates the costs necessary to make the motorcycle 100% operational! Having undergone diagnostics in our service, you will significantly save on its subsequent operation, and get a more reasonable price from the seller! We provide a guarantee for all types of work performed by our motorcycle service!!!

The cost of a complete diagnosis is 30,00 rubles. Diagnostics includes:

1. External inspection (determining accident history)
2. Evaluation of engine performance based on mechanical noise.
3. Compression test.
4. Checking play in wheel bearings, steering column, rear suspension.
5. Checking the battery charging voltage.
6. Checking the condition of consumables.

We present you high quality services, these are:

• Painting your motorcycle
• Plastic repair
• Comprehensive disaster recovery

Prices

Prices for motorcycle servicing in the PositiveMoto service do not include the cost of consumables.

After notifying you that the motorcycle is ready (after repair or maintenance), you are given 1 week of free storage. Afterwards, parking is paid according to seasonal storage rates.

For each motorcycle we service, a service history is kept in our computer database without a statute of limitations. Anyone (with the consent of the motorcycle owner) can obtain the entire service history absolutely free of charge by stating the frame number or the owner’s last name.

Motorcycle services

Our MotoService will service and configure your motorcycle with high quality and in a short time*. All work is carried out by experienced and qualified specialists using high-quality tools. You and your pet will be satisfied. All work is carried out with a quality guarantee. The warranty does not cover worn-out mechanisms of motorcycles with terrible mileage. Oils and the necessary set of consumables are always available. * (in case of AVAILABILITY of spare parts or consumables)

A service book is kept for each motorcycle.

We can provide the following services for each motorcycle:

• Restoring dashboards
• High quality painting of motorcycle parts
• Tire service
• Xenon installation
• Installing a motorcycle alarm
• Argon welding
• Installation and production of reinforced brake hoses
• Turning and milling work

We also have the opportunity to deliver custom parts and tuning in a short time.

Necessary consumables are available:

Chains RK 525, RK 530 Sprockets for most 400 cc Japanese cars. Oil seals, boots and guides for forks Reinforced brake hoses Oil and air filters Moto rubber Brake pads Mirrors Dashboard glasses (Honda CB400, Honda CB400 VTEC) Plastic (Fenders, side covers, tails) Turn signals Windshields for classic motorcycle models Oils MOTUL, REPSOL ( in stock) And one more thing: During motorcycle repairs or just during rain, our clients can leave their equipment in special storage cabinets with a personal key.

All our clients receive the necessary advice on care and operation, ideal for the motorcycle being serviced, taking into account the specifics of each model.

Motorcycle from Japan requires

replacing the oil and oil filter, replacing the brake fluid, cleaning and synchronizing carburetors, replacing fork seals with oil (as appropriate), replacing spark plugs (as appropriate), replacing tires (as appropriate), replacing the chain and sprockets (as appropriate), replacing the battery (as appropriate) Failure to comply with the above recommendations leads to failure of the device in a short time.

Dear current and future clients! When accepting a motorcycle for service, it is necessary to make an advance payment for work and spare parts in the amount of up to 50%!!

Waiting for you!!

Professional motorcycle repair

To avoid problems in the future, the motorcycle engine should only be repaired by an experienced mechanic. He will be able to correctly diagnose and also eliminate it. The specialist will also select all the necessary components in the shortest possible time.

Another point that the master understands is the need for a complete repair. Often, inexperienced mechanics simply replace the problematic part without going into details. But the main reason is a malfunction or defect in nearby parts. Therefore, it is simply necessary to carry out a complete troubleshooting of the motor, this is part of a professional repair.

Motorcycle clutch repair and replacement

One of the most important mechanisms of motorcycles is the clutch. Although this is a fairly simple structural element, it has an important task. The operation of a motorcycle clutch is based on the frictional force between its discs. The torque of the motor is transmitted to the driven parts, which in turn transmit the torque of the gearbox.

The need for clutch repair in Moscow is dictated by various factors, among which are the intensive use of a motorcycle in the city. In addition, motorcycle clutch repair is in demand in case of planned wear of its individual elements.

Common motorcycle clutch problems

Repair or maintenance of a motorcycle clutch involves the following work:

How to diagnose a motor

Here we will look at the main signs of engine failure. For any of them, it’s worth visiting the workshop:

• unstable work;
• startup problems;
• loss of power;
• increased fuel consumption;
• knocking noises during operation;
• detonation;
• ringing or clanging;
• grease leaks;
• high oil consumption.

All of the above indicates the need to carry out detailed diagnostics of the power unit. If you do not respond to such phenomena, you can get serious damage, even jamming the engine.

Diagnostics and replacement of timing chain, repair of timing chain tensioners of motorcycles

Quite often, a malfunction of a motorcycle timing chain (timing chain) is caused by an increase in the pitch between the links. As a result, the motorcycle engine begins to idle incorrectly. Therefore, it is not at all surprising that the chain begins to jump several teeth at the same time. What does this mean? Firstly, the engine will stall. Secondly, the valves may be jammed. And this, in turn, may require expensive repairs to the motorcycle engine in Moscow. Therefore, when the first signs of malfunction are detected, it is recommended to replace the motorcycle timing chain.

How to check whether the engine was repaired by the previous owner

If you buy a motorcycle secondhand, it is worth checking it for any repairs. Perhaps it was not produced professionally, or even the symptoms were simply removed. In any case, you may have problems with further operation.

First of all, inspect the engine yourself. If the bolts on the parts are visually different, then the motor has been disassembled. Also, if there is no dirt and dust, this may indicate a recent engine overhaul. Although the latter may simply be a sign of a good attitude towards technology.

If in any doubt, take your motorcycle to a motorcycle restoration specialist. He will be able to accurately determine whether the unit has been repaired.

Good day, bikepost community. Initially I wrote a question in Q&A, but it somehow got swollen and in the end I decided to collect all the information in one post. There are some difficulties associated with this story, as well as with the fate of my motorcycle, from the very beginning - the story falls into several categories at once and, perhaps and unfortunately, I will choose the most emotionally intense topic of recent months - “Breakage”, which led to a major overhaul during the mileage at 32,000 km. I will try to write the story succinctly and with a sufficient number of photographs, and if you are interested in the cause-and-effect relationship of the title and this short description, please, under the cat.

Purchase

This winter I was looking for a motorcycle on a very limited budget. The initial equipment was already there at that time, and the matter remained with choosing a motorcycle model and a suitable specimen. The moment for the purchase was not the most successful - the turmoil with the exchange rate had just begun, it was no longer possible to purchase a new Chinese moped, and used Chinese ones, which had gone through 1-3 owners on the secondary market, were absolutely unprofitable. So my choice fell on the Yamaha YBR125. Armed with memories of servicing the Karpaty moped, YouTube advisors and a couple of friends who were at my level, I went to look at the red 2012 Yubrick. The owner left a good impression - he is an auto mechanic, he loved his motorcycle and seemed to take care of it (of the “new things” - shabby corrugations, mudguards, rubber protection all around) + the motorcycle was registered, and in our area for such a cubic capacity the numbers are found in one out of five . Yubr was rated by me as a solid 4 (wrongly). Of the jambs discovered at that time:

• The plastic muzzle was damaged after a small accident. I didn’t attach much importance, because I wanted a round headlight
• a dead, cracked front cylinder and a crushed front disc. And again I did not attach much importance to this fact. For the future, this is a reason for a good bargain or refusal to buy (why this is so - further in the text)
• side plastic with broken fasteners here and there
• the right cover sits on the sealant - the clutch was changed (at 20 thousand?)
• 3 owners with title and 27,000 mileage

This is what the bike looked like after purchase:

And this is what his delivery looked like:

Service

Next is the standard set - filters, oil + drive gear and... the front cylinder and here the first difficulties began. The choice of tires for the Yubra is perhaps the most discussed topic in RuNet regarding this motorcycle. After reading the forums, I went to a motorcycle store, where a Shinko 90/90-18 tubeless tube was purchased for 1800 rubles and the wheel was immediately re-aligned. Local dealers claimed that it would be perfect for the YB, the forums said the same thing, but this rubber did not fit under the wing bridge. Well, why not change the tires? It was decided to order a kit including:

• Round headlight yoke
• Special ubroid enduro wing with attachment to the above-mentioned yoke
• Normal corrugations
• Wind protection for hands (later it was very helpful when riding in sub-zero temperatures)
• In addition, a rotten round headlight with the inscription “Made in the USSR” from IZH was found

The result of installing all this stuff (it was and is now. Don’t mix it up!):

Blue electrical tape is a small tuning to give the yubr a brutal look (in fact, the consequences of the first fall). At 30,000 the fork seals began to leak. I replaced them, anthers, 20w oil (there was about 50 ml of fluid left in the left pen at the time of replacement). The old front cylinder was steadily deflating within 24 hours; the former owner assured that the reason was the condition of the tires. After replacing the tires, nothing changed and a more detailed check showed serious deformation of the disc. Apparently they tried to straighten the disk and it began to burst, as air was etched at the base of the beam. A new disc has been ordered. When inspecting a motorcycle with a dented rim, wipe it with a sponge and soapy water.

Distance and breakdown

The season was in full swing, I often went to gymkhana in a neighboring city and went 200 km away to visit my parents for the weekend.
There I turned it up a little to plus XX and the engine began to work... somehow differently. Perhaps this was not a coincidence, but I did not react in any way to the changed sound of work - “well, xx has grown, now the engine is a little more vigorous and turns,” - that’s how I explained it to myself. After a trip to my parents, I went on a 1500 km long trip. It didn’t work out with him from the very beginning, but he made it from Rostov-on-Don to Pyatigorsk with grief, having overcome a small section (about 7 km) under the armpit with dried yubra. In Pyatigorsk, I discovered that I was driving at a minimum oil level, topped it up and drove back in the direction of RnD. In Nevinnomyssk, 400 km from home, the engine started knocking. The motorcycle was still running, but partial disassembly eliminated all possible variants of “simple” breakdowns and the youth continued his further journey in the trunk of his brother’s car to Rostov, and from there again in the trunk of my Fiat, albeit in a semi-disassembled state, home. Next was a complete disassembly of the engine and an attempt to find out the cause of the breakdown. Realizing that I had a rare form of hands-on behavior, permanent bad luck and stupidity, I blamed myself for the engine's oil starvation due to underfilling of oil. However, a study of the device showed that the Yubra engine is practically not susceptible to oil starvation and could run for some time on 200-300 ml of oil. A complete disassembly of the engine revealed the true cause of the breakdown - a defect in the crankshaft oil seal:

The oil seal spring got lost somewhere, probably eaten by the engine. The crankshaft had not had enough oil for a long time (perhaps its entire life) and its life had expired: one bearing began to make noise, vertical play appeared at the connecting rod, and the piston left small scuffs in the cylinder. The photo shows traces of sealant - the previous owner took off the right cover and changed the clutch. Whether this could be partly the reason or not is unclear, just as the desire of people to save 250 rubles on a normal gasket is unclear.

Instead of a conclusion

In this whole story, at some point I wondered whether it would be rational to restore the motorcycle or sell it in this form or even for spare parts. But it was decided to order spare parts and, as my friend noted, I can be completely confident in this motorcycle, because there is nothing else that can break (I really hope). CPG, crankshaft, seals, gaskets and bearings cost ~10,000. The total expenses on the motorcycle and its condition are approaching the cost and condition of the new pre-crisis motorcycle (about 80,000 were spent along with the cost of the motorcycle). The work and help of my father, brother and friends is priceless. Ahead lies assembly, first launch and... running-in. Run-in after 32,000 km.