Jump to content





Photo

Yammy 115 Timing Belt


  • Please log in to reply
33 replies to this topic

#1 captpierre

 
captpierre

    Fishing Icon

  • Members
  • 1,837 posts
  • Gender:Male
  • Location:Stouffville, Ont
 

Posted 09 October 2017 - 10:44 AM

Looked in owners manual of my 10 yr old Yammy.
Says timing belt should be replaced after 5 yrs.
Haven't done it yet.
I do my own regular end of season maintenance. Runs perfectly.
I guess I should get that done. 🤔🙄😩
I did change plugs and impeller at 5 yrs.

Edited by captpierre, 09 October 2017 - 10:45 AM.


#2 ecmilley

 
ecmilley

    All Knowing Angler

  • Members
  • 2,367 posts
  • Gender:Male
  • Location:dunsford
 

Posted 09 October 2017 - 11:40 AM

Yes get it done and pretty simple as far as timing belts go

#3 Mister G

 
Mister G

    Fishing Icon

  • Members
  • 1,306 posts
  • Gender:Male
 

Posted 09 October 2017 - 02:44 PM

I don't know anything about Yammy's but if it's a interference motor and that belt breaks while running you now have a nice heavy anchor because the valves will be driven into the pistons. NOT GOOD....



#4 16Footer

 
16Footer

    Almost a Guide

  • Members
  • 102 posts
  • Gender:Male
  • Location:Halton Hills
 

Posted 09 October 2017 - 04:29 PM

Why does your Yammy have a timing belt when a timing chain would last the life of the engine?

Like car engines the timing belt is an unnecessary expensive repair when timing chains last the life of the engine. 



#5 DRIFTER_016

 
DRIFTER_016

    Freezin' For A Reason

  • Members
  • 8,885 posts
  • Gender:Male
  • Location:Yellowknife, NWT
 

Posted 09 October 2017 - 05:35 PM

Why does your Yammy have a timing belt when a timing chain would last the life of the engine?

Like car engines the timing belt is an unnecessary expensive repair when timing chains last the life of the engine. 

 

Another reason to love my 115 Merc!!!

It has a chain.  :)



#6 OhioFisherman

 
OhioFisherman

    Fishing God

  • Members
  • 5,031 posts
  • Gender:Male
  • Location:Tropical Medina Ohio
 

Posted 09 October 2017 - 06:14 PM

Why does your Yammy have a timing belt when a timing chain would last the life of the engine?

Like car engines the timing belt is an unnecessary expensive repair when timing chains last the life of the engine. 

 

I bought a used Chevy Chevette years ago, I had it about 8 years and had to replace the timing belt twice. I replaced them myself and thought it was pretty easy compared to replacing a timing chain. You are right though most timing chains never need to be replaced.



#7 Old Ironmaker

 
Old Ironmaker

    No longer looking for a job

  • Members
  • 5,735 posts
  • Gender:Male
  • Location:Selkirk Ontario
 

Posted 09 October 2017 - 06:24 PM

My 115 Mariner has a chain, it is a Yamaha/Merc hybrid. I suggest you go to iboats.com, join at zero charge and you have thousands of years experience at your finger tips. If the folks there don't have the right answer the near does not excist.



#8 Mister G

 
Mister G

    Fishing Icon

  • Members
  • 1,306 posts
  • Gender:Male
 

Posted 09 October 2017 - 06:26 PM

Why does your Yammy have a timing belt when a timing chain would last the life of the engine?

Like car engines the timing belt is an unnecessary expensive repair when timing chains last the life of the engine. 

Because timing belts are more precise then a chain that can stretch. Many fine tuned foreign car engines have belts rather then chains. Lexus has a 4.7L engine that has a timing belt while a Ford Tempo only uses chains.

 

Five years seems like a short duration for a outboard engine to have to change the timing belt. Most car/truck engines suggest the belt to be changed at about 145000 km.

 

This could be why Yammies run so much better then those ugly black anchors you always see on cheap boats....LOL



#9 Fisherman

 
Fisherman

    Fishing God

  • Members
  • 6,952 posts
  • Gender:Male
  • Location:Angus, ON
 

Posted 09 October 2017 - 07:59 PM

Because timing belts are more precise then a chain that can stretch. Many fine tuned foreign car engines have belts rather then chains. Lexus has a 4.7L engine that has a timing belt while a Ford Tempo only uses chains.

 

Five years seems like a short duration for a outboard engine to have to change the timing belt. Most car/truck engines suggest the belt to be changed at about 145000 km.

 

This could be why Yammies run so much better then those ugly black anchors you always see on cheap boats....LOL

:jerry:



#10 Old Ironmaker

 
Old Ironmaker

    No longer looking for a job

  • Members
  • 5,735 posts
  • Gender:Male
  • Location:Selkirk Ontario
 

Posted 09 October 2017 - 09:54 PM

Another reason to love my 115 Merc!!![
[b]It has a chain.
  :)

Dave, depending on the year your Merc there is a good chance the main components of your Merc is actually a Yamaha/Merc hybrid. My 115 HP Mariner is a Merc/Yamaha hybrid. As is my 15HP Merc kicker.

Edited by Old Ironmaker, 09 October 2017 - 09:55 PM.


#11 DanD

 
DanD

    Fishing Icon

  • Members
  • 1,465 posts
  • Gender:Male
  • Location:London
 

Posted 10 October 2017 - 05:49 AM

If a manufacturer is trying to squeeze out as much HP, at the most cost effective way; a timing belt will win out every time. 

I'm not saying its the best thing to ever happen in engine design; but it works well in so many ways.

The biggest thing to the manufacturer is the cost to produce a belt driven cam, rather then a chain driven. The next thing is weight 5-6 lbs of chain, compared to maybe a few ounces of a belt. Right there a belt is free HP; easier to spin something light.

The only downfall is the service intervals of a belt.

 

Dan. 



#12 bigbuck

 
bigbuck

    All Knowing Angler

  • Members
  • 2,588 posts
  • Gender:Male
  • Location:Oakville
 

Posted 10 October 2017 - 06:20 PM

Belts run quieter and smoother than timing chains. Get it done, yammies are typically interference engines.

#13 DRIFTER_016

 
DRIFTER_016

    Freezin' For A Reason

  • Members
  • 8,885 posts
  • Gender:Male
  • Location:Yellowknife, NWT
 

Posted 10 October 2017 - 08:11 PM

Dave, depending on the year your Merc there is a good chance the main components of your Merc is actually a Yamaha/Merc hybrid. My 115 HP Mariner is a Merc/Yamaha hybrid. As is my 15HP Merc kicker.

 

 

OI, mine is a 2013 4 stroke.  ;)



#14 North East Shark

 
North East Shark

    Fishing Icon

  • Members
  • 1,489 posts
  • Gender:Male
  • Location:Elliot Lake
 

Posted 10 October 2017 - 08:45 PM

Didn't know Mariner made a 4 stroke hmmm

After thousands of hours and lots of service I think my 60 yamaha is on its last troll,I'm hoping it gets me thru the 2018 season although it don't owe me a cent.

Edited by North East Shark, 10 October 2017 - 08:50 PM.


#15 Old Ironmaker

 
Old Ironmaker

    No longer looking for a job

  • Members
  • 5,735 posts
  • Gender:Male
  • Location:Selkirk Ontario
 

Posted 10 October 2017 - 09:11 PM

Why does your Yammy have a timing belt when a timing chain would last the life of the engine?
Like car engines the timing belt is an unnecessary expensive repair when timing chains last the life of the engine.


That is if the timing chain wasn't on any of Mercedes gas engines of the early 80's. I had a chain go on my 5.6 liter V8 and it required an engine rebuild to the tune of $3500.00, in 88', ouch. Not 20,000 KM later the exact same thing happened so I took it to a Benz dealer and they did the rebuild and put in what they called a "double" timing chain. Is there such a thing? No cost to me. As for the first rebuild they said I should have gone to them first. Another expensive life lesson.

Edited by Old Ironmaker, 10 October 2017 - 09:12 PM.


#16 DRIFTER_016

 
DRIFTER_016

    Freezin' For A Reason

  • Members
  • 8,885 posts
  • Gender:Male
  • Location:Yellowknife, NWT
 

Posted 10 October 2017 - 10:25 PM

 I took it to a Benz dealer and they did the rebuild and put in what they called a "double" timing chain. Is there such a thing?

 

 

Yes, it's called a double roller timing chain.

They have less stretch and are used mainly in performance applications.

 

http://www.onallcyli...-timing-chains/



#17 AdamW

 
AdamW

    Minnow

  • Members
  • 33 posts
  • Gender:Male
  • Location:East Kawarthas
 

Posted 11 October 2017 - 07:39 AM

I never knew this had to be done. 

 

I have a 2007 75hp Honda and a quick Google search showed me a Youtube video of a guy changing the timing belt on the 90hp version of my motor.  Looks like I'll be looking into this more ASAP!

 

Thanks!



#18 Old Ironmaker

 
Old Ironmaker

    No longer looking for a job

  • Members
  • 5,735 posts
  • Gender:Male
  • Location:Selkirk Ontario
 

Posted 11 October 2017 - 08:23 PM

Belts run quieter and smoother than timing chains. Get it done, yammies are typically interference engines.


May I ask what is an "interference chain?"

#19 DRIFTER_016

 
DRIFTER_016

    Freezin' For A Reason

  • Members
  • 8,885 posts
  • Gender:Male
  • Location:Yellowknife, NWT
 

Posted 11 October 2017 - 08:28 PM

May I ask what is an "interference chain?"

 

 

Interference engine not chain. ;)

 

Save's me the trouble of writing it out. ^_^

 

https://en.wikipedia...rference_engine



#20 moemoe

 
moemoe

    Guide

  • Members
  • 592 posts
 

Posted 12 October 2017 - 06:09 PM

I have a 225hp yammy and thought same issue after 5 years, took it to bay city marine who i trust and have had good service, they said only replace of necessary and if not cracked or loose like the majority are save your money and dont replace







View My Stats