Hey guys, anyone tackle changing timing belts in their Yamahas? My engines went over 1000 hours this past October and the engine manual says change the timing belts. I have a 2007 Marlin with F250s. Thanks for any tips.
Timing belts
- Thread starter g0tagrip
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Doc Stressor
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I like to do things myself once an engine is out of warranty. I have the shop manual and the belt replacement doesn't look too hard. But it does require a couple of careful alignment and tensioning steps. So I'd let a tech who has done the job before do the timing belt. The F250 is an interference engine. If a belt was to break as the result of a poor installation, a valve could hit the top of a piston and the powerhead would be toast.
Labor isn't too bad for the job. I believe it is no more than 2 hr. The most expensive part of the job is cost of the belt tensioner, which is recommended by Yamaha as part of the service. Since this is an interference engine, I would replace the tensioner at 1000 hr just in case.
Labor isn't too bad for the job. I believe it is no more than 2 hr. The most expensive part of the job is cost of the belt tensioner, which is recommended by Yamaha as part of the service. Since this is an interference engine, I would replace the tensioner at 1000 hr just in case.
So the tech changed the timing belts today. 1038 hours and both needed changing. And sure enough Starboard engine tensioner was bad, on order. Good call Doc Stressor! Timing belts were expensive too!
Had both timing belt tensioners replaced as recommended, although the Port engine tested fine, the starboard engine tensioner was bad.