Husqvarna Pin OEM #588850301

Precise chain tension is one of the most critical factors in safe, efficient chainsaw operation — and the bar adjusting pin is the small but essential component that makes it possible. The Genuine OEM Husqvarna Bar Adjusting Pin #588850301 is the factory-correct pin that connects the tensioner adjustment screw to the guide bar, allowing you to precisely position the bar for correct chain tension every time you service your saw.

This replacement bar adjustment pin for the chainsaw clutch cover assembly connects the adjustment screw to the guide bar for chain tensioning — replace if missing or broken. The bar adjustment pin engages the hole on the bar when the tensioner screw is rotated, and the entire assembly “snaps” into place when the pin seats correctly — after which the tensioner screw is turned in the opposite direction to begin tensioning the chain.

Without a properly functioning bar adjusting pin, the tensioner screw turns freely with no effect on bar position, leaving the chain unable to be tensioned and the saw unsafe to operate. Proper chainsaw chain tension is critical for performance — a loose chain increases the risk of kickback and the chances of the chain being thrown off the guide bar, while a chain that is too tight can prevent the chainsaw from turning the chain or cause the saw to overheat.

Part #588850301 (also formatted as 588 85 03-01) is identified as the Bar Adjusting Pin fitting Husqvarna T540XP, 338XPT, and 339XP chainsaws. It also fits the 536 LIXP, 436LI, T536LIXP, T540 XP II, and 238 chainsaws, among a total of 20 compatible machines. This part also fits RedMax equipment requiring part number 588850301. It additionally fits other Husqvarna-produced brands requiring this part, including AYP, Craftsman, Jonsered, McCulloch, Poulan, Poulan Pro, and Weed Eater equipment.

This OEM part weighs just 0.01 lbs and ships within 1 business day.

Key Features:

• Genuine Husqvarna OEM bar adjusting pin — factory-correct fit for precise chain tensioning
• Connects the tensioner adjustment screw to the guide bar for accurate bar positioning
• Enables correct chain tension — critical for safe operation, cutting performance, and equipment longevity
• Also described as a chain tensioner pin — part of the side cover clutch assembly
• Compatible with Husqvarna T540XP, T540 XP II, T536LiXP, 338XPT, 339XP, 436LI, 536LiXP, 238, and more
• Also fits RedMax, AYP, Craftsman, Jonsered, McCulloch, Poulan, Poulan Pro, and Weed Eater equipment requiring this part
• Sold individually; weighs 0.01 lbs

OEM Part Number: 588850301 Alt. Format: 588 85 03-01 Brand: Husqvarna / RedMax / Jonsered Part Type: Bar Adjusting Pin / Chain Tensioner Pin Compatible Equipment: Husqvarna Chainsaws

Always verify fitment using your full model number and serial number before ordering.