Yamaha G1 Model Number

[patrickl]

I have a Yamaha G1 gasoline cart with the number J32-010998 stamped on the engine crankcase. I would like to know the year of this cart. I have checked the Yamaha model listing but it does not list the J32. Can someone help? Is there any differences compared to the J31 models? Thanks, Pat

[cgtech]

You need to find the cart serial number, not number on block to properly identify cart. Look on the top of the bar of the frame between the rear shocks, or on the cross-brace behind the rear bumper.

[patrickl]

Cgtech, thanks for your reply. The number on the frame is the same as what is stamped on the engine crankcase - J32-010998. Thanks, Pat

[patrickl]

One more question. How can I test the oil pump? Can I simply disconnect the oil injection line, start the motor and see if oil is flowing? Can the oil injector nozzle fail? I suspect that there is little or no oil being injected because when I asked the owner how much oil the cart was using he said that I was the last one to check the oil level. That was twelve months ago and the oil level is still high. Yes, the motor is noisy when under load but the owner said it has been like that for years! So for my own piece of mind I would like to confirm or otherwise that oil is being injected. Thanks, Pat

[cgtech]

The oil tank should last roughly 10 tanks of fuel. The oil flow to the small line at the carb is so minimal, you could need to run the engine for a while (while denying it oil, if line is disconnected) to detect any flow. If it was being denied oil for months, it would already be trashed (this would only take 1 day or less of operation). If you are worried, mix your own oil in the fuel. Do not open any of the oil lines unless absolutely necessary, any air bubble in the line could equal death for the engine.

[patrickl]

Thanks Cgtech.