Thorough Instructions On Start/Stop Methods; Fuel Used; Chain Oil; Adjusting Saw Chain Tension - Hitachi CS 33EDT Service Manual

2. Thorough instruction to the customers

A. Thorough instructions on start/stop methods
Thoroughly instruct the customers on how to start and stop the product.
Regarding startup, emphasize the difference between "when the engine is cool" and "when the engine
is warm," and focus on cautions regarding chain blade rotation with the choke fully open after initial
combustion at choke startup and at startup with the throttle open halfway.
B. Fuel used
This product is equipped with a two-cycle gasoline engine; instruct the customers how to use the
fuel mixed adequately at a ratio of [25 to 50] to one for gasoline and two-cycle dedicated oil.
Using plastic bottles such as polyethylene and PET bottles to store fuel will lead to trouble due to
dissolved plastics components. Instruct customers to only use bottles specifically designed to store
fuel.
The fuel deteriorates and changes in quality when stored for a long time. Improper storage
conditions such as a loose plug in summer may cause deterioration even in one day. Therefore,
instruct the customers not to store prepared fuel, but only prepare fuel on an as-needed basis.
C. Chain oil
Instruct the customers to use Hitachi chain saw oil (1 liter) sold separately or commercially available
SAE20 or SAE30 engine oil.
Remind the customers to always replenish the chain oil when replenishing the fuel.
D. Adjusting saw chain tension
Low saw chain tension may damage the blades or guide bar, and even result in blades being detached
under extremely low tension. In particular, new saw chain tend to quickly elongate; therefore, advise
the customers to frequently adjust saw chain tension.
E. Storage
When the chain saw is not to be used for a prolonged period, instruct the customers to empty the fuel
tank and run the chain saw in idling mode until it stops in order to empty the carburetor.
The carburetor must be emptied since the gasoline component of mixed fuel left in the carburetor will
vaporize over an extended period of time, thereby inhibiting engine startup next season due to the fuel
line being clogged by a film of two-cycle dedicated oil.
-6-