Timing belt change

MarineBob

MarineBob

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I got a recommendation to change out the timing belt and associated tensioner(s). This is on a 2013 Yammie F250 with about 650-700 hours. Not sure if its ever been done. I got the boat used 5+ years ago with about 300 hours and there is not indication it was ever done. Is this a necessary change? Seems logical but I am not real familiar with this part of the Yamaha.
 
The recommended timing bely maintenance for my F200s is, Inspect every 100 yours, Replace at 1000 hours. of course that assumes normal wear.( no serious cracking, missing belt 'teeth', excessive rubber dust buildup, no obvious idler bearing issues etc.)
 
seasick said:
The recommended timing bely maintenance for my F200s is, Inspect every 100 yours, Replace at 1000 hours. of course that assumes normal wear.( no serious cracking, missing belt 'teeth', excessive rubber dust buildup, no obvious idler bearing issues etc.)
Click to expand...
Thanks for the input. I looked on line and found a note that says every 1000 hrs or five years. I know at best its been at least 5-6 years and possibly never so I guess its time. The labor charge is ...well....ridiculous. You can buy the belt for $70 and I suppose a few $$$$ more for the other parts. I guess there is an idler and a tensioner that go with the service, That makes sense while its apart
 
The 5 year spec doesn't sound right to me. My service manual only specifies hours.
I guess the real questions is how accurate are your hour engine hour numbers ( 700 est)?
If 5 years was the requirement, you would be on your fourth bely with 2 years to go till next service.
See if you can look at the official service manual. Maintenance is good when done on recommended schedule but more often isn't better. Its just adding expense
 
seasick said:
The 5 year spec doesn't sound right to me. My service manual only specifies hours.
I guess the real questions is how accurate are your hour engine hour numbers ( 700 est)?
If 5 years was the requirement, you would be on your fourth bely with 2 years to go till next service.
See if you can look at the official service manual. Maintenance is good when done on recommended schedule but more often isn't better. Its just adding expense
Click to expand...
seasick said:
The 5 year spec doesn't sound right to me. My service manual only specifies hours.
I guess the real questions is how accurate are your hour engine hour numbers ( 700 est)?
If 5 years was the requirement, you would be on your fourth bely with 2 years to go till next service.
See if you can look at the official service manual. Maintenance is good when done on recommended schedule but more often isn't better. Its just adding expense
Click to expand...
I know the hours are right, just don't know exactly what they are. Boat is still in winter storage. I had the boat almost 6 years and put on about 350-400 hours, adding to the previous 300 (+/-) I saw some notes these are interference engines so it makes sense to prevent failure. So I know its been at least 5-6 years and there is no indication original owner ever changed the belt. That gets it to 13 years so it ought to be renewed
 
It will give you peace of mind if you change the belt.
Your post does raise an interesting question though. Yamaha doesn't specify a time frame, just hours of operation. So if you had a very low hour motor would you be as inclined to change the belt based on age alone?
I tend to replace most maintenance parts based on condition first and age second . I do 'Guilt' maintenance. If the water pump was strong, change every 4 or 5 years (Guilt). Same for water pumps. Pennywise and pound foolish? Maybe :)
 
seasick said:
It will give you peace of mind if you change the belt.
Your post does raise an interesting question though. Yamaha doesn't specify a time frame, just hours of operation. So if you had a very low hour motor would you be as inclined to change the belt based on age alone?
I tend to replace most maintenance parts based on condition first and age second . I do 'Guilt' maintenance. If the water pump was strong, change every 4 or 5 years (Guilt). Same for water pumps. Pennywise and pound foolish? Maybe :)
Click to expand...
I guess based on what info I can find so far (not a ton of research) if these are interference engines, 13 years on a 'rubber' belt seems like a lot of time to not change it out. I suppose it might last forever but a failure underway with an interference engine,......not a good thing. I guess its worth the effort.
 
My research show several posts describing the F250 as an interference design.
 
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