Fuel MIX, Safety Guard Assembly | McCulloch 251 / 25 cc manual

D.FUELMIX

Use only fuel recommended by this manual.

This product is fitted with a 2-stroke engine and therefore requires a 2-stroke petrol and oil mix. Use leaded (4 Star) or unleaded petrol with a minimum octane rating of 90.

Only use oil from sealed containers. In order to obtain a good fuel mix, put the oil into the container before the petrol.

The use of sub-standard petrol or oil may reduce performance or reduce the life of certain components.

Leaded Petrol

If using leaded petrol, the correct fuel mix is achieved by either using 5% (20:1) of a well known brand of 2-stroke engine oil, or else 2.5% (40:1) of special engine oil.

Unleaded Petrol

If using unleaded petrol, you must use a totally synthetic 2-stroke engine oil or branded 2-stroke engine oil. In either case use 2.5% (40:1) of oil.

IMPORTANT

Always shake the fuel mix container thoroughly before pouring any fuel mix.

Fuel mix properties may deteriorate with time and should be used up within 2 months.

We recommend that you prepare fuel mix according to your immediate requirements only. Never use fuel mix more than 2 months old so as to avoid possible engine damage.

WARNING

Do not smoke when re-fuelling.

Always open the fuel cap slowly, to release any pressure build up in the tank.

Re-fuel in open spaces only, keeping away from naked flames or sparks.

Safe Storage of Fuel

Petrol fuel mix is highly inflammable. Put out all cigarettes, pipes and cigars before working with fuel. Avoid spilling fuel.

Store fuel in a cool, well ventilated place, in an approved container specifically designed for the purpose. Never store engine with fuel in the tank in enclosed, poorly ventilated areas, where fuel fumes may reach an open flame, spark or pilot light such as in a furnace, water heater, clothes dryer etc.

Petrol fumes can cause an explosion or a fire. Never store large amounts of fuel.

To prevent possible restarting problems avoid running the fuel tank dry. This also helps to extend engine life.

E.SAFETYGUARDASSEMBLY

1,2) In the interest of safety, it is imperative that the unit is used with the correct guard (P/N 242043) when using any blade or a nylon string head.

Line cutter blade (L): assemble as illustrated.

A double shoulder harness must also be worn.

Only use blades or nylon string heads clearly marked with a maximum speed of at least 10,500 min-1.

Follow the fitting instructions carefully.

F.BLADEANDNYLONSTRINGHEADASSEMBLY

Assemble the correct guard to suit the kind of blade or nylon string head to be used (See section: SAFETY GUARD ASSEMBLY).

1)Assemble blade as illustrated:

a)Flange guard - b) Upper cap with blade centering - c) Blade with text and directional arrow facing upwards - d) Lower washer - e) Fixed mower gauge - f) Blade locking screw.

2)Make sure that the blade bore opening fits perfectly around the centering collar on the upper cap.

Tighten counterclockwise.

While tightening, the blade assembly can be held fast by inserting the wrench or the screwdriver supplied into the cap and

gearcase holes.

To do this, rotate the cap intil the two holes coincide.

3)Assemble nylon string head as illustrated:

a)Flange guard - b) Upper cap - c) Guard d) Nylon string head

Tighten counterclockwise.

4)While tightening, the head assembly can be held fast by inserting the wrench or the screwdriver supplied into the holes as already shown for blade assembly.

WARNING: Please do not use the accessory nylon string head guard (item C Fig. 3 F) together with metal blades.