Question about Yamaha Motorcycles
How to set point gap
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Posted on Feb 06, 2017
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Posted on Jan 02, 2017
The base setting for the point gap is 15 thousandths. Set the left cylinder to .015 and check the timing with a timing light. Adjust the timing for the left side by moving the base plate up or down. Now change the timing light to the right cylinder and check the timing for the left cylinder. Adjust the timing for the left side by changing the points gap if the left base plate can not be adjusted, ( I can't remember if the left plate adjusts or not ). The wires should not be grounded. Check to see if the timing advances as it should when the revs increase. Below is a photo from an 1979 RD400 owners manual. Yours looks the same.
Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part and/or the notation "Not Available" is in the description, the part is not in stock. It looks like they have points for a 1975 RD350 and they should work on your bike. www.babbittsonline.com/pages/parts/viewbybrandand/parts.aspx
Yamaha can tell from the VIN what exact year and model your bike is. Check with them as I don't think the 350 was made in 1979.
Posted on Jul 12, 2009
SOURCE: Points gap for Kawasaki KE 125
Point gap will be .14. Make sure after you set the points at .14 you attempt to insert a .16 feeler gauge. It should not go between the points without moving them. Also, a .12 feeler gauge should slip in without any force.
Posted on Nov 23, 2009
Several things could cause this and are somewhat inter related. I would clean the carb inside and out to start with. Check the reeds for cracks, chips and distortion. The cost is only a can of spray carb cleaner. Timing is not likely to be a factor. Use a timing light to check if you wish, again the cost is little or nothing. The most likely causes are bad crankshaft seals and/or the need for new seals on the intake assembly. The metal carb fits into a flexible fitting between it and the reed assembly. When the fitting gets old and hard it tends to loose it's ability to seal. Often they will develop cracks that let in air which leans the fuel mix. When the engine warms up the cracks widen and the engine runs poorly.
Posted on Dec 02, 2009
Testimonial: "thanks again guru!! u always had great explanations!! i greatly appreciate u thanks,Bill"
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