Husqvarna 525P4S Operation Manual - Page 10

GENERAL SAFETY PRECAUTIONS • Chain pitch (inches). The spacing between the drive links of the chain must match the spacing of the teeth on the bar tip sprocket and drive sprocket. • Drive link width (mm/inches) • Number of drive links. The number of drive links is determined by the length of the bar, the chain pitch and the number of teeth on the bar tip sprocket. • Number of drive links. • Bar groove width (inches/mm). The groove in the bar must match the width of the chain drive links. Sharpening your chain and adjusting raker clearance WARNING! The risk of kickback is ! increased with a badly sharpened chain! General information on sharpening cutting teeth • Lubrication hole and hole for the chain tensioner. Saw chain • Saw chain pitch (inches). (The distance between three drive links, divided by two.) • Never use a blunt chain. When the chain is blunt you have to exert more pressure to force the bar through the wood and the cuttings will be very small. If the chain is very blunt it will not produce any cuttings at all. Wood powder would be the only result. • A sharp chain eats its way through the wood and produces long, thick cuttings. • The cutting part of the chain is called the cutting link and this consists of a cutting tooth (A) and the raker lip (B). The cutting depth is determined by the difference in height between the two. AB • When you sharpen a cutting tooth there are four important factors to remember. 10 - English