How To Use The Manual - Stiga MP 84/98 Workshop Manual

WORKSHOP MANUAL
MP 84/98 - MP 84/98 Hy
GENERAL INFORMATIONS
The purpose of this manual is to assist Service Cen-
tres with service, disassemble and repair the versions
of the machines:
– mechanical driven (MP 84/98);
– hydrostatic driven (MP 84/98 Hy).
The manual has left out the simplest and quickest
operations that can be handled by a good mechanic,
while concentrating more on specific aspects with
tips and advice on the best servicing procedures.
Please take time to read through this manual to ac-
quire a basic understanding of the machine, which is
necessary for working rationally without making er-
rors or wasting time.
All problems related to the use of the machine are
fully covered in the User manual.
STRUCTURE OF THE MANUAL
The manual is divided into sections and chapters.
Each page of this manual states the following infor-
mation:
A) Machines or series of machines to which the con-
tents of the chapter are applicable.
A C
WORKSHOP MANUAL
REMOVAL OF THE ENGINE
MP 84/98 - MP 84/98 Hy
Remove the front hood.
General informations
For greater operating convenience it is recommended
Since there are different types of drive, the stag-
that the transmission belt is slackened off; this is done
es de scribed here refer to those shared or similar
by enga ging the parking brake.
in all types of engine.
Related topics
FIRST disconnect the black earth cable from
D the bat tery, and THEN the red cable, to prevent pos-
sible short circuits and dangerous situations.
[ 5.1] Removal of front hood
[ 6.8] Replacement of the accelerator and ad-
justment of the carburettor
Free the blade belt (1) from the clutch pulley (2).
Tightening torques
5 Screw for pulley ............................. 45 ÷ 50 Nm
- Screws for engine fastening ............ 25 ÷ 30 Nm 4
2
5
7 6
Map of functional units
2
5
B) Identification and number of the page based on
the following criteria:
– the first field indicates the section and chapter;
– the second field indicates the revision index;
– the third field indicates the chapter validity start
date, i.e. the year of manufacture of the ma-
chine;
– the fourth field indicates the page number and
total number of pages dedicated to the subject.
C) Chapter title.
D) General information, references to other chapters
in the manual, technical information related to the
topic, and buttons with links to the machine oper-
ating units map can be found in the left column on
each initial page.
The content of the manual is divided into sections
which correspond to the various subjects and the dif-
ferent types of servicing.
1. Rules and procedures for Service Centres
This chapter covers all the main aspects of the re­
lationship between the manufacturer and the ser­
vice centres.
A close collaboration between the manufacturer
and the service centres is conclusive for solv­
B
CHAPTER REVISION FROM ... PAGE
5.5 2 2018 1 of 2
ing problems in the most effective way as well as
Disconnect the connectors (3) from the clutch con-
maintaining an image of efficiency and reliability.
tacts (2), unhook the return spring (4) from the clutch
side and unscrew the central screw (5) with the help
of a power screwdriver.
Compliance with these brief and simple guide­
Remove the clutch (2) from the engine shaft, together
lines will facilitate this task and prevent general
with the transmission command pulley (6) and the
spacer (7 - if installed).
mi sunderstandings and time­wasting for both the
IMPORTANT To remove
the clutch (2) from the en-
manufacturer and the service centre.
gine shaft, absolutely do
not use a lever to force
the pulleys or the outer
cover. In case of difficulty,
apply an unlocking spray
and gently tap on the hub
1 with a hammer, to facili-
2. General regulations
tate extraction.
This chapter covers the main aspects of a servi­
Remove the exhaust guard (8).
c ing procedure and the general rules for guaran­
Disconnect the accelerator cable control and the
e lectrical cables.
teeing a successful service which protects the
en vironment and respects the safety of both the
3
ser viceman and the user of the apparatus.
8

HOW TO USE THE MANUAL

SECTIONS OF THE MANUAL
CHAPTER REVISION FROM ...
i 1 2018
3. Maintenance
This chapter covers the main aspects of a servi c­
ing procedure.
A specific chapter is dedicated to a quick trouble­
shooting guide on the most frequent questions
and the chapter references providing information
on the interventions required to resolve the same.
4. Adjustments and tuning
his chapter deals with the adjustments to be ma de
to remedy the more frequent performance fai lures
and are usually resolved by quick checks and tun­
ings.
5. Removal of external parts and main assem-
blies
For doing more difficult jobs, greater accessibility
may be required. This can be done by taking the
unit concerned off and working at the bench, or by
removing the cover or other external parts.
Whether or not this will be useful is at the discre­
tion of the mechanic's experience.
6. Repairs
This chapter deals with all the more complex work
connected with the replacement or repair of mal­
functioning or worn parts.
The descriptions must follow a logical sequence­
and can include operations not specifically con­
nected to a particular type of repair.
In this case, careful reading of the entire procedure
can help you omit all those operations not connect­
ed with the case in hand without, however, over­
looking anything that may be necessary.
7. Electrical system
This chapter deals with the problems and checks
con nect ed with the electrical system.
All work can be done using a tester without ha ving
to use special equipment.
The electrical diagrams can be useful to you for
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