Question about Yamaha Motorcycles
Help with 1977 yamaha yz400 engine specs.what is the peak hp @ what rpm ?
Hi, Rpm1mil for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "Free" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Yamaha DT 400 1977
Yamaha IT 490
Yamaha YZ400FL Service Manual
OEM parts for Yamaha
Posted on May 24, 2017
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Posted on Jan 02, 2017
The service manual has a diagram, but you need to zoom in to read the colors.
You can download a free one at
Posted on Nov 21, 2009
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