- 8 -
STARTING UP
WARNING! All operations indicated below must be carried out with the engine
switched off and the spark plug wire unplugged.
WARNING! Always use protective gloves when handling the chain.
ACCESSORY ASSEMBLY (FIG. D)
The chain saw accessory can be assembled on the following Valex trimmers:
Tucson 31-4T, Tucson 33, Tucson 43, Tucson 52.
Remove the plastic guard by unscrewing the screws (fig.D a).
Remove the grass-cutting accessory assembled on the machine by unscrewing the
screws (1) and (2) and extracting it by pulling in the direction indicated by the arrow
(fig.D b).
Insert the chain saw accessory and centre the hole of screw 1 with the hole in the
hose. Tighten screw 1 and fix the hexagonal head screw 2 (fig.D c).
WARNING
The distance A must never exceed 35 cm. In order to ensure the machine is correctly
balanced, move the handle by loosening the screws 3.
Lubricate the entire blade with a small amount of oil. Check the assembly and make
an empty test run.
BAR AND CHAIN
1 Assembly of the bar, the chain, and the housing
- Put the chain lube and leave to soak for some hours.
- Place the chain saw on a flat surface and remove the nut/s and the housing.
- Using a screwdriver, turn the chain adjustment screw (7) counter-clockwise until
the end of the screw.
- Slip the bar groove over the fixing pin/s and pass the chain over the sprocket. During
this phase it is important to centre the tensioning pin on the lower hole of the bar.
- Insert the chain in the bar grooves, making sure to respect the correct direction of
the chain (Fig.E)
- Assemble the housing and, holding the nose of the bar upwards (using gloves!), fix
the nut/s tightly.
WARNING! Do not use the chain saw before tensioning the chain.
2 Tensioning the chain (Fig. C)
- Loosen the bar fixing nut half a turn.
- Using a screwdriver, turn the chain adjustment screw clockwise until the chain has
reached the correct tension.
Checking the correct tension. The correct tension is reached when you are able to
manually lift the chain 3-4 mm to the centre of the bar.
- If the chain is too tense, loosen the nut/s and the chain adjustment screw and push
the bar leftwards in such a way as to make it slip into place.
- Repeat the adjustment taking care to tighten the chain less.
- When the chain has been adjusted, fix the nut/s securely, always holding the nose
of the bar upwards.
- Check for the correct tension again.
- Lubricate the chain and the rail with a specific oil.
WARNING! During the first cuts, when the machine is still new, the chain will loosen
quite frequently, but this is normal during the breaking-in period of a new tool.
WARNING! Never leave the chain loose as it may come off the bar while cutting.
WARNING! If the chain is too tight, it could cause overheating and damages. It is
forbidden to use the machine without lubricating oil for the chain.
REFUELLING LUBRICATING OIL FOR THE CHAIN
WARNING! Do not use old or recycled oil to fill the tank. Never use the tool without
oil as its functionality and the safety of the operator would be compromised. The
chain saw is sold with an empty tank.
Before opening the petrol cap, for refuelling, place the chain saw on a flat surface
with the cap facing upwards.
- Unscrew the oil cap and fill the tank with biodegradable chain oil available in spe-
cialized shops, hardware stores, agricultural machinery dealers, etc.
- Fill the tank to a maximum of 1 cm below the cap, being careful not to introduce dirt,
sawdust, or dust inside.
- Close the tank cap.
- WARNING! It is very important to clean the chain saw (with a brush) around the cap
before refilling.
- IMPORTANT! The oil level must be checked frequently during use to prevent the chain
remaining without lubricant. Lack of lubricant causes rapid wear of the chain and
the bar.
Check the level every 10 minutes of work
- IMPORTANT! The length of time one oil fill-up lasts may vary according to the chain
tension, the type of wood being cut, the environmental temperature, the oil density,
and the usage of the chain saw.
BREAKING IN THE CHAIN
Before using the chain saw for the first time, lubricate the chain and its guide on the
bar with lubricating oil. Check the chain tension often.
STARTING/STOPPING THE CHAIN
Starting the chain
For starting the chain it is enough, after switching on the engine, to press the acce-
lerator lever.
Stopping the chain
It is enough to release the accelerator lever.
WARNING! When you have finished working or whilst taking a break, always
switch off the engine.
WARNING! In order to prevent kickbacks always grip both of the hand grips safely
and avoid cutting with the tip of the bar and avoid getting the bar stuck in the
branch being cut.
ADJUSTMENT FOR CHAIN LUBRICANT (FIG. A)
Using a screwdriver in the screw (9) can vary the amount of oil will fall in the chain:
- Clockwise to increase the amount of oil.
- Clockwise to decrease oil qauntità.
In addition to visually check the oil deposited on the chain, you can practically see if
oil is present in correct quantity:
- Start the machine and direct the tip of the bar toward the floor without touching it.
- Speed up in order to get the maximum speed.
- If the chain is lubricated properly in the floor you will notice a line of oil to the bar.
FELLING TREES AND SAFETY PROCEDURES
The following topics will be discussed below:
1. Advice for those using the chain saw for the first time
2. Useful suggestions concerning safety gear
3. Limiting access to danger zones
4. Precautions to be taken according to weather conditions for people in the area and
eventual local regulations.
5. Preparing and using escape routes
6. Felling branches on slopes
7. Felling trees in relation to the saw’s cutting capacity.
8. How to control the fall of the branch being cut.
9. Cutting branches (debranching)
1. Advice for those using the chain saw for the first time
Those who are using the chain saw for the first time should receive practical instructions
concerning its use and gear by an expert operator. A beginner should first practice by
cutting wood on a trestle or other support.
2. Useful suggestions concerning safety gear
For protection from other risks related to the use of this tool, adequate clothing and
gear must be used. In general, the following devices should be used:
- Heavy-duty padded trousers.
- Coloured jacket to ensure that the operator is easily visible.
- Heavy-duty leggings and heavy-duty, safety shoes with non-skid soles and steel toes.
- Heavy-duty gloves and, if possible, insulated to dampen vibrations.
- Helmet with visor for protection from falling branches and materials.
- Soundproof headphones to protect hearing.
3. Limiting access to danger zones
Limit access to the area by marking it off with warning signs.
4. Precautions to be taken according to weather conditions for people in the area
and eventual local regulations.
- IMPORTANT! Do not use the chain saw in adverse weather conditions: rain, snow,
low visibility, near cables or electrical networks, or where there may be a risk of
explosions.
- Never cut in the presence of people or animals
- Find out about any restrictions on forest cutting issued by institutions, municipal ...
6. Felling branches on slopes
- IMPORTANT! When felling a branch on a slope, the operator must position himself
on the upper side because, once the branch is cut, it will roll downhill.
7. Felling branches in relation to the saw’s cutting capacity.
Do not make cuts on diameters greater than the maximum cutting length (see tech-
nical specifications). It is always better not to exaggerate the diameter of the cut and
considering its weight.
8.How to control the fall of the branch
Usually, felling a branch consists of two main cuts, the face cut (C Fig.1) and the
undercut (D. Fig. 1), which is needed to fell the branch.
- Begin with the face cut (C) on the side of the branch facing the direction of the fall (E).
- The cut must be as deep as about ¼ of the trunk diameter (F).
- After this operation, make the cut (D) on the other side of the branch at about 3-5
cm above the height of the face cut (Fig. 1).
Summary of Contents for 1491964
Page 3: ... 3 ...
