How to Find Your Serial Numbers on a Honda Engine
How to Find Your Serial Numbers on a Honda Engine
As a general rule, serial numbers they are printed in or attached to the main core the machine. Obviously it's not normally attached to peripheral parts as these are more likely to be damaged and removed. So with this in mind, for an engine, this means it is normally found somewhere on the crankcase. Here is a quick guide which may come in handy when you want to find a serial number on a specific Honda Engine model.
Honda Serial Number Format
A Honda serial number will always have a 4-5 letter prefix which is followed by 7 numbers giving you the complete identity of the engine.
Honda produce a wide range of different engine series and many of them have a different location for the serial number. To make it easier the guide below has been broken down into each series and points to where you can locate serial number for each model.
Honda GX Range
GX100 - Left-hand side of the recoil assembly, sitting underneath the air filter casing.
GX120 / GX160 / GX200 / GX240 / GX270 / GX340 / GX390 - Located on the left hand side of the machine (when looking at the shaft), underneath the fuel tank.
GX360 - This is located towards the back of the machine and is on the right side of the oil filter.
GX610 / GX620 / GX670 - To the right hand side of the recoil assembly/fan housing, inbetween the spark plug and oil drain bolt.
GX630 / GX660 / GX690 - Towards the bottom of the machine on the left hand side when facing the shaft.
GX 22/31 - In between the air filter casing and the fuel tank.
Honda GXV Range
GXV160 - Underneath the recoil assembly on the left hand side of the oil filler.
GXV270 / GXV340 / GXV390 - Underneath the recoil assembly on the left hand side of the oil filler.
GXV610 / GXV620 / GXV670 - On the right hand side, when looking from above with the cylinders furthest away from you.
GXV 50 - On the right hand side of the air filter under the fuel tank.
Honda GP Range
GP160 / GP200 - On the left hand side of the machine, when facing the shaft, below the fuel tank.
Honda GCV Range
GCV135 / GCV160 - Underneath the recoil assembly on the opposite side of the fuel tank cap.
GCV520 / GCV530 - In between the two cylinders (with "OHV" casings) and sits underneath the air filter housing.
GC135 / GC160 - On the right left side of the machine when facing the shaft, on the same side as the oil filler.
Honda G Range
G100 / G150 / G200 - On the left hand side when looking at the shaft, near the oil drain plug.
Honda D Range
GD 321/411 - Underneath the muffler.
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