INTRODUCTION
The purpose of this manual is to help Service
Centres service, disassemble and repair SV150
engines.
Each page of this manual states the following infor-
mation:
A)
Engine type or types the page is referring to.
B)
Page number, specifically:
– the first two figures separated by a point indi-
cate the section and the chapter
– the third figure indicates the modification
index.
C)
Temporary validity of the page, with reference to
the year of manufacture
or serial
numbers.
D)
Date of release.
E)
Page number and total number of pages dedi-
cated to the subject.
F)
Any previous or ensuing pages dedicated to the
subject.
G)
Any chapters before or after the current one.
The manual refers to the following symbols:
Warns of operations that should be carried
out with utmost care to avoid impairing the func-
tionality and safety of the lawnmower.
Warns of operations that should be carried
out with utmost care to avoid injury to the oper-
ator.
Reference to another procedure or part of
the manual.
NOTE
All references to “right”, “left”, “front”, “rear”,
“upper” and “lower” refer to the engine installed on
the lawnmower and viewed from the user’s operat-
ing position.
The manual has left out the simplest and quickest
operations that can be handled by a good mechan-
ic, while concentrating more on specific aspects
and the best servicing procedures.
Please read all the contents of this manual to
become familiar with the basics of the engine,
which is fundamental for operating in a logical man-
ner without making errors or wasting time.
All problems related to use are fully covered in the
user manual.
01/2005
SV 150
ii
.
0
INTRODUCTION
1 / 1
WORKSHOP MANUAL
page
from
2004
to
••••
6.3 INTAKE SYSTEM
GENERAL INFORMATION
The intake system uses an air filter which is directly
connected to the carburettor and a manifold which
conveys the air/petrol mixture towards the induction
valve.
The intake system can malfunction in the following
ways:
•
no or difficult starting or insufficient power (if not
due to other causes):
= Air filter clogged
[
6.3.A]
;
The air filter is found on the right hand side of the
engine and can be inspected without having to
remove other parts.
The entire body of the filter only needs to be
removed in case of access to the carburettor.
SERVICING PROCEDURES
A) Maintenance of filtering element
1
Clean the area around the filter cover (1).
2
Remove the cover (1) by releasing the rear flap
(2) and remove the sponge filtering element (3).
IMPORTANT!
The filtering element must be
kept clean and soaked in oil. Replace it if bro-
ken, cracked or fragmented. Do not use com-
pressed air for cleaning the filtering element.
3
Wash the sponge filtering element in water and
detergent and dry it with a clean cloth.
4
Soak the filtering element with 2 spoonfuls of
clean engine oil and squeeze it several times to
spread the oil evenly (4).
5
Remove any excess oil with a clean cloth.
6
With a jet of compressed air, clean inside the
body (5) of the filter by removing dust and
remains of grass, making sure that the intake
pipe hole (6) is closed so that nothing gets
inside the pipe.
7
Install the filtering element (3) in place and close
the cover (1).
SV 150
6.3
.
0
INTAKE SYSTEM
1 / 2
WORKSHOP MANUAL
page
from
2004
to
••••
01/2005
4
6
2
5
3
3
1
1
A
C
F
E
F
D
G
B
G