Chain guide bar Makita 45 cm 1.3 mm 0.325" for chainsaws (MPN 191G40-2)

Replacement guide bar for Makita chainsaws with a length of 45 cm, 1.3 mm gauge and 0.325" pitch, designed to guide the saw chain precisely and maintain stable cutting performance. This guide bar is intended for use with chains and chainsaw models that require a 45 cm bar, 1.3 mm gauge and 0.325" chain pitch, providing correct alignment of the chain, reduced lateral play and consistent chain tension during operation.

Advantages

The guide bar is manufactured to match the specified length, gauge and pitch, ensuring compatibility with appropriately matched chains and sprockets. Its rigid construction helps reduce flex under load for straighter cuts and improved control. Precise rail geometry supports smooth chain travel and helps distribute lubrication along the bar groove to limit wear. The bar’s dimensions allow straightforward fitment and replacement on chainsaws designed for this specification.

Suitable for

• General timber cutting where a 45 cm cutting length is required
• Repair and maintenance of compatible Makita chainsaws and other models using 45 cm, 1.3 mm, 0.325" bars
• Replacement of worn or damaged guide bars to restore cutting accuracy

Key specifications

• Length: 45 cm cutting/guide length
• Gauge (rail thickness): 1.3 mm
• Chain pitch compatibility: 0.325"
• Material: hardened steel construction suitable for saw bar service
• Rail profile: standard groove to accept compatible chains and facilitate lubrication

How to use

Before installation, ensure the chainsaw is switched off and the spark plug or battery is disconnected to prevent accidental start. Remove the side cover and the existing chain and bar following the chainsaw manufacturer’s service instructions. Fit the replacement guide bar on the mounting studs, align the chain around the sprocket and into the bar groove, then tension the chain evenly according to the chainsaw’s tensioning procedure. Refit the side cover and recheck chain tension after a short break-in cut. Regularly inspect mounting points and the bar groove for wear.

Usage recommendations

Use the guide bar only with chains that match the 0.325" pitch and 1.3 mm gauge. Maintain proper chain tension, keep the bar groove and lubrication ports clean, and use appropriate bar and chain oil to reduce wear. Replace the bar if excessive wear, bent rails or significant groove damage is present. For safe operation, follow the chainsaw manufacturer’s maintenance and safety guidelines.