Small Engines (Lawn Mowers, etc.): Carb Troubles, ride on lawnmower, throttle shaft


Question
Thanks very much John! I am ordering the parts when I am out of school for the week.
I noticed that you can different RPM governor rods or something similar of that sort. would these have any effect on the mower, postively or negatively? Do you know anything about tuning these motors for power? Also, is there a way to tell how old the engine is?
Thanks,
Speed Junkie Neil...
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Followup To

Question -
I have just recived a old ride on lawnmower, and I am converting it to a
go-kart.
When I recived it, the carb linkages are and stuff are all off, we have some but
we dont know how all that goes.
Thanks.
B&S Engine info:
Model: 130902
Type: 0439-01
Code: 77020103

Answer -
 Hello Neil:

 Go to this Addy http://shop.briggsandstratton.com/BShopProductListingPage.asp?rsvp=0&PARENTID=0& and Enter the Model Number 130902 and the Type Numbers 0439. Then Click Search. On the Next Page Scroll to the 2nd Listing and Click View PDF. This will Download a Breakdown of the Engine. Scroll to Page 3 of 11. This is the Carburator Breakdown. Linkage #s 410 and 202 are the Same, just Designed Different. The Design you have will not Matter. This Linkage Goes From the Governor Control Arm to the Throttle Shaft Lever. If Using Throttle Control Housing Style #409, the Spring Connectd to the Piviot on the Throttle Control Housing to the Governor Control Arm. When the Throttle Cable is Moved it Pulls the Spring and the Engine Revs. For your Purpose, Make sure the Throttle Cable is Pulling on the Spring that Pulls the Governor Control Arm. If you Bypass the Spring, you can Over Rev the Engine and Do Internal Damage. Hope this Helps. Let me know what Happens, Please. I enjoy knowing the Outcome. Thanks.

 Good Luck

 Respectfully

 John

Answer
 Hello Neil:

 I Only Suggest you Increase the Engine Speed by Shortening the Governor Control Spring Until the 3200 RPM's is Reached. At 3200RPM's the Engine is at Maximum Safe RPM's. Anything Over these RPMs will Result in Engine Damage. For Higher RPMs the Engine has to be Built for the Increased RPMs. Hope this Helps. Let me know what Happens, Please. I enjoy knowing the Outcome. Thanks.

 Good Luck

 Respectfully

 John