Jump to content
r1jakecfd

Onan P220 Carb Main Jet

Recommended Posts

Hi Guys,

I’m cleaning the Onan P220 carb on my 520H. It’s a Nikki 146-0479 carb. I was wondering if the main jet needs An o ring and if so which type and size? There was no o ring when I took it apart. 

Thanks!

 

John

Share this post


Link to post
Share on other sites

john

there is no o-ring to seal the main jet. ( # 134 on most )

early nikki's used an aluminum washer seal.

 

when you think about it, they have a machined brass surface against a machined aluminum surface,

so no seal is needed.

 

thank you. boomer ( the used onan engine parts guy, also NOS and new )

  • Excellent 1

Share this post


Link to post
Share on other sites

Great point Boomer! I did reinstall it without the o-ring earlier. I’m reinstalling the carb tomorrow and running it. Cross your fingers👍

3 hours ago, boomers_influence said:

john

there is no o-ring to seal the main jet. ( # 134 on most )

early nikki's used an aluminum washer seal.

 

when you think about it, they have a machined brass surface against a machined aluminum surface,

so no seal is needed.

 

thank you. boomer ( the used onan engine parts guy, also NOS and new )

 

Edited by r1jakecfd
Quote

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By Bill D
      1990 - 416 H  627 Hours.  Ugly but runs well.  Strong Hydro.  Many new parts.  Engine will most likely need governor work.  Trade includes extra filters, seal for motion control shaft and metal flyball spacer for governor.  Trades for good running Briggs or Kohler Twins considered.  Engines must be complete with PTO clutch and mounting plate.  I have $500 in this tractor, other trades and offers of equal value considered.  Thanks for looking. Bill


    • By BB4029
      Recently picked up an early 90's Wheel Horse 212-5 with Onan E125v. Intake valve was sticky and it had a bent pushrod. Can anyone tell me of a source for a new head gasket and a push rod? I've looked online but the only gasket I found was a used one on ebay. Thanks.
    • By Keith
      I've come across a 520H with 1750 hours on the Onan motor.  Assuming it starts and runs okay, is it possible to know whether the motor has been overhauled?  The asking price seems good to me, but a pricey rebuild could be a few months away if those are original hours.
       
      Also it creeps forward when it neutral.
       
    • By Bill D
      Hi,
       
      I was reading another thread where someone stated that P220 was underrated and actually produced 28 HP on the dyno.  Is the same true of the P216?  Also, I may be trading this engine for a rebuilt K341. Which one do you guys prefer?  Thanks. 
    • By mustangken
      My 520H blow out a valve seat.  Any suggestions on a new motor or should I have the seat repaired?
×