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Yamaha Rhino Problem?

PostPosted: Thu Jun 14, 2018 6:28 pm
by Wrangler95
Does a side by side have a compression release to open so the starter can turn the engine over so it can start?

Re: Yamaha Rhino Problem?

PostPosted: Thu Jun 14, 2018 6:50 pm
by Bucky
I don't think so.

Re: Yamaha Rhino Problem?

PostPosted: Thu Jun 14, 2018 11:57 pm
by jlanecr500
Yes, a Rhino does have part in the camshaft that bumps the exhaust valve open before tdc to lower cranking compression. A centrifugal weight swings the decompressor out of the way over 800 rpm's. This is done so that a high compression 4 stroke can be started by a smaller battery and starter.

Re: Yamaha Rhino Problem?

PostPosted: Fri Jun 15, 2018 10:24 am
by Wrangler95
[quote="jlanecr500"]Yes, a Rhino does have part in the camshaft that bumps the exhaust valve open before tdc to lower cranking compression. A centrifugal weight swings the decompressor out of the way over 800 rpm's. This is done so that a high compression 4 stroke can be started by a smaller battery and starter.[/quote

Is it a big job to fix?Thanks

Re: Yamaha Rhino Problem?

PostPosted: Fri Jun 15, 2018 2:12 pm
by jlanecr500
Wrangler95 wrote:
jlanecr500 wrote:Yes, a Rhino does have part in the camshaft that bumps the exhaust valve open before tdc to lower cranking compression. A centrifugal weight swings the decompressor out of the way over 800 rpm's. This is done so that a high compression 4 stroke can be started by a smaller battery and starter.[/quote

Is it a big job to fix?Thanks


The camshaft would need to come out. Individual parts are available but a complete camshaft with all decompressor parts costs less than $200

What year and model is it?

Re: Yamaha Rhino Problem?

PostPosted: Fri Jun 15, 2018 7:42 pm
by Wrangler95
It is a 2005 rhino 660!!!

Re: Yamaha Rhino Problem?

PostPosted: Sun Jun 17, 2018 2:57 pm
by jlanecr500
What problem does it have? Is the starter unable to turn the engine over? Is the battery in good condition? If the battery and starter are good, I would pull the plug and spin it over just in case the cylinder is full of fuel or coolant. If the cylinder is clear, the valve cover needs to come off for a decompressor inspection.

Re: Yamaha Rhino Problem?

PostPosted: Sun Jun 17, 2018 3:21 pm
by Wrangler95
It makes a sound when you turn the key to start it and after you turn the key 5 or 6 times the engine will turn over and start.The sound is like a grind sound but not real loud.It sounds like the starter is trying to kick in but cant.Its battery is good,also put a new ignition switch and starter solenoid on it!!My mechanic said the starter was good but I dont know!!