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weird maintenance items #4657303
02/05/18 07:34 PM
02/05/18 07:34 PM
Joined: Oct 2014
Posts: 739
Pa, USA
NH73 Online content OP
NH73  Online Content OP
Joined: Oct 2014
Posts: 739
Pa, USA
I am going through my Honda Mower OM(HRX217HXA). At 100 hours, it says, grease the pinion gears. How do you do that? At 150 hours, it says to Adjust the valve clearance and the idle speed. Also clean the fuel tank. What? Clean the fuel tank. At 250 hours, clean the combustion chamber. We don't even do that on our cars. Does anybody do these? I like to get my stuff to run as long as I can. On my Kawasaki at 300 hours, it says to clean combustion chamber, check and adjust valve clearance, and clean and lap valve seating surface. Now I am not close to 300 hours on the Kawasaki, and I don't think the Honda is due for its 250 hour service, but how do you do all that if necessary. Or is it? We don't even do these in our cars.


2017 Toyota RAV4 Hybrid
2004 Ford Explorer Sport Trac
2012 Gravely ZT XL 48 w/ Kawasaki FR730
Re: weird maintenance items [Re: NH73] #4657312
02/05/18 07:39 PM
02/05/18 07:39 PM
Joined: Jun 2003
Posts: 17,362
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,362
Deplorable in apple valley, ca
The valves need to be checked and adjusted. Dont worry about the other things.


02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: weird maintenance items [Re: NH73] #4657421
02/05/18 09:49 PM
02/05/18 09:49 PM
Joined: Dec 2012
Posts: 605
Washington for now
WhyMe Offline
WhyMe  Offline
Joined: Dec 2012
Posts: 605
Washington for now
i adjusted the ohv on my B&S engine and it ran a lot better. they were tight

Re: weird maintenance items [Re: WhyMe] #4657465
02/05/18 10:46 PM
02/05/18 10:46 PM
Joined: Jun 2009
Posts: 1,815
Wisconsin
wallyuwl Offline
wallyuwl  Offline
Joined: Jun 2009
Posts: 1,815
Wisconsin
Originally Posted By: WhyMe
i adjusted the ohv on my B&S engine and it ran a lot better. they were tight
How do you do that?

Re: weird maintenance items [Re: wallyuwl] #4657519
02/06/18 12:22 AM
02/06/18 12:22 AM
Joined: Jan 2018
Posts: 534
San Antonio, TX
das_peikko Offline
das_peikko  Offline
Joined: Jan 2018
Posts: 534
San Antonio, TX
Originally Posted By: wallyuwl
How do you do that?


The service manual will tell you exactly how.

Re: weird maintenance items [Re: wallyuwl] #4657525
02/06/18 12:33 AM
02/06/18 12:33 AM
Joined: Dec 2012
Posts: 605
Washington for now
WhyMe Offline
WhyMe  Offline
Joined: Dec 2012
Posts: 605
Washington for now
Originally Posted By: wallyuwl
Originally Posted By: WhyMe
i adjusted the ohv on my B&S engine and it ran a lot better. they were tight
How do you do that?


https://www.youtube.com/watch?v=sztd7YP4IZY

Re: weird maintenance items [Re: NH73] #4657714
02/06/18 09:31 AM
02/06/18 09:31 AM
Joined: Apr 2009
Posts: 2,933
Canada
boraticus Offline
boraticus  Offline
Joined: Apr 2009
Posts: 2,933
Canada
Adjusting the valves is simple provided one has some basic knowledge and understanding of internal combustion engines.

Knowing what TDC (top dead center) means is of importance as well as knowing the difference between the exhaust and intake valves. Having an idea of where and what a cam shaft and rocker arms are comes in handy.

If people have no mechanical experience, they are better off leaving that work to people who know what they're doing. They could end up with an engine that runs poorly by simply throwing off the adjustment when trying to torque down the lock nuts.

Re: weird maintenance items [Re: NH73] #4658340
02/06/18 07:51 PM
02/06/18 07:51 PM
Joined: Jan 2009
Posts: 1,306
Watertown, New York
cronk Offline
cronk  Offline
Joined: Jan 2009
Posts: 1,306
Watertown, New York
Check the valve clearances when due for sure.

As far as cleaning the combustion chamber, I usually spray some Amsoil Power Foam into the carburetor of a running small engine gradually until it stalls, let it soak for an hour then start up and fog the yard for 15 minutes. This seems to get the combustion chamber plenty clean.
You can also use Chemtool or Seafoam for this.
Don't worry about lapping valves or any of that, I've seen plenty of Hondas and Kawasakis with over 2000 hours without ever having the head taken off.


2008 Ford F350
2003 Chevy Cavalier
2011 Nissan Quest
1986 Pontiac Trans Am
1940 Ford 9N Tractor
Amsoil lubes and filters!

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