8-2
SA221/324/424 Operation Manual
The service life of the tractor is determined by how
well the tractor is operated and maintained.
Prior to delivery, the tractor has been fully tested to
ensure that the tractor is operating normally. The
manner the tractor is operated during the breaking-in
period greatly affects the effective life of the tractor.
To bring about optimal tractor performance and to
achieve the longest tractor life, various parts of the
tractor have to be properly broken-in.
The following practices must be observed.
●
Operate the tractor at low speeds for the first
50 operating hours.
●
Avoid heavy operations and loads.
●
Always start and brake the tractor slowly.
●
In cold weather, always fully warm up the engine
before operating the tractor.
●
Avoid under any circumstances running the engine
at a speed higher than needed.
●
On rough roads or terrains, drive at low speeds.
■
Change the lubricating oil for the new
tractor
The quality of the lubricating oil in any new tractor is
very important. Parts not fully broken-in may not yet
perfectly fit with each other.
Small metal shavings can be created during
operation of a new tractor. The shavings can lead to
premature wear or damage to tractor parts.
Yanmar recommends changing the lubricating oil
earlier than the standard oil change schedule.
For the recommended oil change schedule, for
details, see "Chapter 13. MAINTENANCE" on page
13-1.
1. Operate a New Tractor
NOTE
●
The preceding practices should also be adopted
for all tractors regardless of age to prevent
premature tractor breakages and accidents.
2. Raise and Lower the Roll-Over
Protective Structure (ROPS)
●
Always operate the tractor with the Roll-Over
Protective Structure (ROPS) in the unfolded
"up" position.
• unless folding the structure is absolutely
necessary.
●
Keep the retractable seatbelt fastened while
operating the tractor with the Roll-Over
Protective Structure (ROPS) in the unfolded
"up" position.
• the preceding practice reduces the
possibility of injury or death in the event of a
roll over accident
●
If the Roll-Over Protective Structure (ROPS)
is not installed (taken off for some reason),
always install the structure before operating
the tractor.
●
Always keep the Roll-Over Protective
Structure (ROPS) on its original condition. An
alteration can impair the protective capacity
of the structure.
●
Immediately replace a damaged Roll-Over
Protective Structure (ROPS). Contact YOUR
LOCAL YANMAR TRACTOR DEALER for
technical assistance.
●
Do not under any circumstances use the
retractable seatbelt:
• while the Roll-Over Protective Structure
(ROPS) is in the folded "down" position
• while the tractor does not have a Roll-Over
Protective Structure (ROPS)
! WARNING
SA221_324_424_OperatorsManual.book 2 ページ 2018年6月4日 月曜日 午後5時19分