2023 Stihl Petrol chainsaws for forestry MS 661 C-M W

Description:

Very powerful high-performance saw with advanced 2-MIX technology, STIHL M-Tronic (M) and heated handles (W). This electronic engine management system regulates the ignition timing and the fuel supply and automatically registers the external temperature for optimal engine performance, great acceleration and sustained maximum torque. The heated handles keep your hands warm and dry for a better grip, making your work safer in winter. Extremely robust and durable with low vibration levels. Designed for professional use within forestry and big timber harvesting.

Features may include:

STIHL M-Tronic (FT)

• For a cold start, the STIHL M-Tronic only needs one start position on the combi-lever. After starting, you can immediately power up to full speed. The amount of fuel required is precisely calculated by the system and supplied as needed. Otherwise, start in position I as usual.

STIHL ElastoStart

• Due to compression pressure, jerky stresses occur when starting internal combustion engines. The damping element in the ElastoStart special starter grip alternately absorbs and releases force according to the compression pattern. The result is smooth, even starting.

STIHL 2-MIX engine

• The two-stroke engine with STIHL 2-MIX technology saves up to 20 % of fuel and reduces emissions by up to 70 % compared to STIHL 2-stroke engines of the same performance class without 2-MIX technology.

Electrically heated handles (W)

• The electrically heated handles (W) keep your hands warm and dry for a better grip, making your work safer in winter. No-maintenance, wear-free heating strips in the front and rear handles can be engaged with a switch as required to make the handle warmer and dryer.

Carburettor heating (V)

• By changing the chain saw from summer to winter operation, the intake air is pre-heated over the engine fins. This ensures that the carburettor does not ice up and you can continue working in freezing temperatures.

Controlled-delivery oil pump

• Different bar lengths, wood types and sawing techniques require different amounts of oil. The controlled-delivery oil pump allows the user to select just the right amount of oil for the job at hand.

Side-mounted chain tensioning

• Side-mounted chain tensioning makes it easy to tension the chain safely.

HD2 filter

• This air filter keeps even the finest dust away from the engine, ensuring a particularly long service life. Thanks to its special material, the filter can easily be cleaned by washing, for example with STIHL Varioclean and warm water.

Compensator

• This controller in the carburettor prevents the fuel-air mixture getting richer as the air filter becomes clogged. The correct quantity of fuel is delivered to the carburettor depending on the quantity of air passing through the air filter. This keeps the fuel/air ratio in the combustion mixture constant and hence also the engine power. The filter doesn't need to be cleaned until an appreciable drop in power occurs.

Decompression valve

The decompression valve is part of the easy starting system. The valve should be pressed before starting to reduce the compression pressure when starting, as well as reducing the effort needed to pull the starter rope. The decompression valve is semi-automatic; it must be pressed manually before starting, but then closes automatically.