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  Topic Review (Newest First)
11-02-2019 09:46 PM
Vincent
Quote:
Originally Posted by TRW View Post
Yes, thanks! So when the engine is stopped it resets to decompression setting?
Exactly... somewhere at a certain rpm below idle, the decompression system is activated no matter what!
If your engine ain't running you compression stroke should be decompressed...
11-02-2019 09:32 PM
TRW Yes, thanks! So when the engine is stopped it resets to decompression setting?
11-02-2019 11:03 AM
Jssrvlz Ah ha! Real information! Thanks Vincent
11-02-2019 12:47 AM
Vincent
Quote:
Originally Posted by TRW View Post
Vincent, is there a way to engage the decompression? My 91 Honda 4Trax 300 has a back up kick starter, and it has a decompression lever on the head that does make it much easier to kick and start.
You can't Manuel control this style like older bikes.

It's fully automatic decompressor. It's always on I.E. releasing cylinder pressure on the compression stroke, until your engine fires and revs higher then starter speed. Then centrifugal force retract the decompression pin before 1600 rpms idling speed.

Here is the centrifugal mechanism for the decompression pin on the 558 and 686cc SOHC engines
11-01-2019 11:39 PM
TRW Vincent, is there a way to engage the decompression? My 91 Honda 4Trax 300 has a back up kick starter, and it has a decompression lever on the head that does make it much easier to kick and start.
11-01-2019 12:37 PM
KodiakAfishyo
Quote:
Originally Posted by Vincent View Post
All our motors 558, 686, 708 etc... are equipped with decompressors...
Good to know, I did not know that.
11-01-2019 06:16 AM
Vincent
Quote:
Originally Posted by KodiakAfishyo View Post
I had a 2006 yamaha 350 Bruin with a pull start and the one time I had to use it when the battery died it wore out 3 big guys that all struggled to pull it over fast enough to get it to fire. So in order to pull over a 700 would be impossible without a compression release. I also had a 1999 polaris 500 that was easy to pull start because it had a compression release.
All our motors 558, 686, 708 etc... are equipped with decompressors...
11-01-2019 03:01 AM
Jssrvlz Im glad everyone has put in. Its been on my mind for a year and a half. I could understand the idea that its just tooo much to pull start it.

Possibly keep a good drill with you...and take the cover off the cvt and crank that 22mm over? Hmm.

Our injecters have a fuel rail, and they need that 12v to Fire constantly.

Its just food for thought.

Or carry a starter in the toolbox.

I for sure need to add some fuses aswell. Im glad that was brought up
10-31-2019 11:55 PM
JimP
Quote:
Originally Posted by TRW View Post
JimP, I did not know that the injectors required power to fire, thanks for the info!

I haven't tore into our injectors but I believe that they are a throttle body type of injector. In other words it looks like a carburetor without the upper part.

The main thing that needs voltage is the ECM that controls everything. It has a minimum voltage requirement and without that it will not turn on. I am not sure what the voltage requirements are for the throttle body injection. I might have to dig into the repair manual and see if I can find something.
10-31-2019 09:56 PM
TRW JimP, I did not know that the injectors required power to fire, thanks for the info!
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