Chain Tension; Sharpening Of Saw Chain - Solo 639 Instrucciones De Manejo

SHUTTING OFF ENGINE
Shut the engine off with the ignition switch (A) to „Off" (position
marked „Stop" - „O") (fig.35).
The engine must definitely be shut off during:
• Service, work breaks, refueling, transporting.
• Sharpening chain.
• When saw is not in use
- Immediately shut off engine if a noticeable change in handling
characteristics occur.
- Remember never place hot chain saw on dry grass or other
flammable objects. The muffler emits tremendous heat capable
of ignition (danger of fire).
TRANSPORTING (FIG. 36)
- When transporting saw or changing work
locations, shut off engine and/or put chain
brake on to avoid accidental chain rotation.
- Never carry or transport the chain saw with rotating saw chain.
- In case chain saw is to be transported over a long
distance, definitely slide cover over saw chain.
- Carry chain saw only at front handlebar. The guide bar faces to
the rear and muffler away from body. Avoid contact with the
muffler to prevent serious burns.
- When transporting in a vehicle make sure the chain
saw is properly secured to avoid spilling fuel and bar oil.
- For extended storage or shipment of the chain saw, run engine
until tank is dry or empty tank of fuel and bar oil.
CARE AND MAITENANCE OF BAR AND CHAIN
SAW CHAIN
As with any cutting tool, the saw chain too is subject to normal
wear. A chain saw performs best with a correctly sharpened saw
chain. Each chain design, cutting performance, and configuration
is adapted to a specific chain saw model (fig.37).
The most important distinguishing characteristics of a saw chain
are:
1. Cutter shape (A)
2. Pitch (B) as well as
3. Drive link gauge (C)
1. The cutter design is distinguished as:
a) Chisel cutter (squared chisel, professional type chain saws)
(fig.37).
b) Chipper cutter (rounded chisel, consumer and hobby chain
saws) (fig.37b).
2. The chain pitch determines the measurement of the chain. It is
equal to the distance between 3 rivets divided by two. The pitch is
stated in inches, the internationally accepted measurement
standard. (fig.37b)
Pitch
inches = (mm)
3/8" 90 SG (9,32 mm)
3/8" S (9,32 mm)
.325" (8,25 mm)
3/8" (9,32 mm)
.404" (10,26 mm)
3) The drive link „gauge" or chain gauge is the thickness of the
bottom section of the drive link which fits into chain saw bar
groove (fig.37c).

CHAIN TENSION

The correct saw chain tension is very critical to the long service
life of a saw chain. Check chain tension frequently after engine
has been shut off and bar and chain have cooled off.
Follow all instructions carefully on saw chain sharpening.
Incorrectly sharpended chains lead to engine overload and bar
wear and reduces the service life of bar and chain. Additionally,
it causes increased risk of kick-back, which may also result from
enlarged depth gauges.
SHARPENING OF
SAW CHAIN
(Fig. 38/29/40)
- For sharpening, use a special chain file with the correct file
diameter. (see filing chart). Standard round files are not suitable.
- File forward only (arrow), lift file up on backstroke (fig.38).
- File the shortest cutter first. The length of this cutter is the
guide for all other chain cutters. (fig.38). All cutters must be equal
in length.
- A file holder simplifies guiding the file since it has markings for
correct file angle (align markings parallel to the saw chain) and
limits the depth (4/5 of file diameter) (fig.39).
General Instructions for Filing Cutters
1. Support file holder on cutter top plate.
2. File cutters on one side of the chain from inside out, then file
the other side.
3. Keep the marker line on the file holder parallel to the center
of the chain.
4. File enough to remove any damage to cutting edges (side plate
and top plate).
FILING TOOL AND SPECIFICATION CHART
Chain
pitch
3/8 90 SG
3/8 S
Deriveline gauge
.325
mm = (inches)
.325(21BP)
1,1 mm (.042")
3/8
1,3 mm (.050")
.404
1,5 mm (.058")
ADJUSTING THE DEPTH GAUGE SETTING (Fig.40)
1,5 mm (.058")
The distance between depth gauge and cutter (round nose) and
1,6 mm (0.63")
cutting edge determines the size of the wood chip.
17
CAUTION! Use only SOLO approved and original
SOLO replacement saw chains and guide bar.
WARNING! You must shut off engine before
performing any maintenance on the saw chain,
disconnect spark plug cap (see section on spark plug
replacement) and wear protective gloves!
FOR YOUR SAFETY! When advancing the chain by
hand while filing cutters, always pull chain forward
toward bar tip. This avoids injury to your hand should
you slip.
File diam. File Depth gauge
mm inches Angel setting mm/inch
4,5
.177 30° 0,50mm 0.20"
4,0 5/32
30° 0,65mm .025"
4,5 .177 30°
0,75mm .030"
4,8 3/16 30° .025"
0,65mm
5,5 7/32 30° .025"
0,65mm
5,5 7/32 .030"
0,75mm
Filing direction
Level 10° upwards
X
X
X
X
X
X