1997 Timberwolf Valve

sefh · 01-24-2012, 07:32 AM

Can someone tell me how to adjust the intake and exhaust valves on this motor? I just finished installing a new top end on it and it now backfires through the exhaust when I let off the throttle. I'm thinking the valves need adjustments.

Thanks in advance.

farmerbrown · 02-29-2012, 10:03 PM

Hi,
This my first time on this forum.
I have a 1993 yamaha timberwolf and I have just replaced the piston rings,timing chain.
I have checked the compression and its good (125psi)
My problem is it does not idle all the time and it fowels the spark with dark black soot after only 3 or 4 hours running. The timberwolf is new to me so i dont know much about its history.Since i have done the rings it does not use any oil.
Can anybody tell me
how to tune a mikuni carb on it?.
Thanks Ray

01-24-2012, 07:32 AM	#1
sefh Join Date: Jul 2010 Posts: 2 Thanks: 1 Thanked 0 Times in 0 Posts	1997 Timberwolf Valve Can someone tell me how to adjust the intake and exhaust valves on this motor? I just finished installing a new top end on it and it now backfires through the exhaust when I let off the throttle. I'm thinking the valves need adjustments. Thanks in advance.

02-29-2012, 10:03 PM	#2
farmerbrown Join Date: Feb 2012 Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts	1993 timberwolf 2x4 is fowling the plug in 3 hrs Hi, This my first time on this forum. I have a 1993 yamaha timberwolf and I have just replaced the piston rings,timing chain. I have checked the compression and its good (125psi) My problem is it does not idle all the time and it fowels the spark with dark black soot after only 3 or 4 hours running. The timberwolf is new to me so i dont know much about its history.Since i have done the rings it does not use any oil. Can anybody tell me how to tune a mikuni carb on it?. Thanks Ray

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