HPI RACING SAVAGE X 4.6 Pull Start Broken

Pullstart Assembly (12mm Hex)

The internal recoil spring or plastic pulley often shears under the high torque required to turn the F4.6 engine's high-compression piston. This complete assembly replaces the housing, spring, and rope, which are the primary failure points when the handle fails to retract or the rope snaps.

SKU: HPI 1428

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One Way Bearing (12mm Hex)

This bearing allows the starter to turn the engine in one direction and freewheel once started. It frequently fails when nitro fuel lubricants contaminate the rollers, causing them to slip on the starter shaft so that pulling the cord does not actually rotate the crankshaft.

SKU: HPI 1430

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Starting Pin and Spring

Located behind the backplate, this pin is pushed by a small spring to engage the engine's crankshaft during starting. Research indicates these springs are prone to snapping on the F4.6 engine, which results in the pull-starter feeling disconnected from the engine's internal rotating mass.

SKU: HPI 111595

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