Craftsman Lawn & Garden Equipment Engine Idle Adjustment Screw 631838 1.50 x 0.25 x 0.25 Genuine OEM Fits Craftsman Tecumseh Tractor Accessories
by Craftsman · Fastener
Lawn & GardenLawn MowersRiding Mowers & Tractors
Condition: NewAffiliate link: you pay on Sears PartsDirect's site, under its shipping and returns. We may earn a commission. Delivery time is shown on Sears PartsDirect's site.
Sears PartsDirect prices are from its product feed as of 18 Oct 2026, not live: the current price and availability are on Sears PartsDirect's own page.
Description
This is a Genuine OEM Craftsman part. This idle adjustment screw (part number 631838) is for lawn and garden equipment engines. Idle adjustment screw 631838 lets you adjust the carburetor fuel mixture or idle speed. Work in a well-ventilated area when installing this part. Drain the fuel tank and disconnect the spark plug wire before beginning the repair. Also fits these brands: Craftsman, Tecumseh, Tractor Accessories | Craftsman Lawn & Garden Equipment Engine Idle Adjustment Screw 631838 1.50 x 0.25 x 0.25 Genuine OEM Fits Craftsman Tecumseh Tractor Accessories
Fits, as listed by Sears PartsDirect
Listed by part number, not by machine model: confirm the number against your appliance's or machine's parts list before ordering.
Also fits these brands: Craftsman, Tecumseh, Tractor Accessories
Replacement fits: Craftsman Tecumseh Tractor Accessories
For: Lawn & Garden Equipment Engine
Specifications
1.50 x 0.25 x 0.25