Transmission schematic Honda Cb750k 750 Four K 1979 Usa

A new genuine Honda part like this COUNTER-SHAFT is a guarantee of correct machining and the correct grade of materials used in the manufacturing process - rebuilding your engine and transmission will, with genuine Honda bearings included, be like an insurance policy!
For your entire Honda parts requirements, access our online 'Product Gallery' or where available the online schematic for your model, and take a more informed decision when placing your order.

A new genuine Honda part like this COUNTER-SHAFT is a guarantee of correct machining and the correct grade of materials used in the manufacturing process - rebuilding your engine and transmission will, with genuine Honda bearings included, be like an insurance policy!
For your entire Honda parts requirements, access our online 'Product Gallery' or where available the online schematic for your model, and take a more informed decision when placing your order.

Part of rebuilding any engine usually includes reconditioning the transmission assembly; this will improve performance, reduce transmission backlash and lead to a smoother and quieter ride - replacing this COUNTER-SHAFT LOW GEAR can only improve the results.

A new genuine Honda part like this MAIN-SHAFT 2ND GEAR is a guarantee of correct machining and the correct grade of materials used in the manufacturing process - rebuilding the engine and transmission will, with genuine Honda bearings included, be like an insurance policy!
For your entire Honda parts requirements, access our online 'Product Gallery' or where available the online schematic for your model, and take a more informed decision when placing your order.

Rebuilding the engine and transmission is easy - well not exactly, but certainly easier when as many old internal parts are substituted with new!
These particular parts are becoming scarce - don't miss out!

Rebuilding the engine and transmission is easy - well not exactly, but certainly easier when as many old internal parts are substituted with new!
These particular parts are becoming scarce - don't miss out!

Specifying only genuine Honda bearings means buying bearings made in Japan to Honda quality control standards.
Specifying only genuine Honda bearings means fitting the same bearings that were deemed good enough by the factory when the machine rolled off the production line.
So when ordering this C/SHAFT 3RD GEAR, don't let down the rest of the assembly by using sub-standard bearings!

Overhauling the transmission - renewing as many of the wear and damage prone components, when replacing this M-FOURTH GEAR, will attain the best results. Interfacing used parts with new will lead to premature wear of the new parts and a less smooth transmission action.

Overhauling the transmission - renewing as many of the wear and damage prone components, when replacing this M-FOURTH GEAR, will attain the best results. Interfacing used parts with new will lead to premature wear of the new parts and a less smooth transmission action.

One of the many important items in the transmission - if this is not right the rest of the assembly will be sub-standard!
Renewing as many new parts as possible at the same time is almost like an insurance policy - don't leave to too long though, these 28 x 17 SPLINE COLLAR assemblies are in short supply!

Specifying a new locating pin will ensure perfect fit with accurate location. The old part may be to worn so why take the chance for such a low price?

Low price - High quality Honda fastener. The low cost of this part saves the trouble of refurbishing and re-plating the old bolt.

Overhauling the gearbox assembly - If yes read on!
Renewing ALL the wear components at the same time will attain the best results - Replacing ALL the thrust washers, bushes and this 28mm CIRCLIP will also be a positive action!
Interfacing used parts with new will lead to premature wear of the new parts and compromise long term durability!
Other related parts you may wish to consider:

90452371000
90458292000
90461286000
23455463000
23485410003

Essential replacement part when re-assembling any engine. The importance of renewing the oil seals with genuine Honda items can never be overstated!
This is the 40 x 62 x 13 OIL SEAL
Other oil seals that may be required, please always check the part numbers are compatible with your application:

91201425003
91204425003
91257425013

Seals, gaskets and other consumables, why not check our on-line schematic, or if your machine is not supported this way, simply browse the on-line Gallery; this will list everything you need for a successful overhaul.
This is the 19.4 x 2.4 O-RING.